A professor of economics at Harvard researched the benefits of attending a selective high school in New York City. The three high schools he took data from were Stuyvesant, Brooklyn Technical, and Bronx High School of Science. However, he found that attending one of these schools actually had a negative impact on students. Students attending one of these schools actually faced worse graduation and college enrollment statistics than similar students at other schools. The impact on their SAT scores was also found to be minimal. However, marginal students were helped by attending one of these schools as they were pushed to take more rigorous courses than they likely otherwise would have taken.